Universal Mind 'Reach out for me' (Red Coach)

Mecca record I think?

My question is, on YouTube two or three people have posted an amazing 5 minute+ version of this. But on Discogs,  the promo and issue both have 3.30 on the label. Have also searched comps and can't find any extended version.  Anyone got any idea where this long version derives from? 

 

It looks like its on disc 3 of this compilation set -

 

Thanks. I thought that series was unofficial but can see from the image you posted that it's not.